Single-family new house construction building permits: 1  2003: 20 buildings, average cost: $97,500. 2  2004: 42 buildings, average cost: $77,300. 3  2005: 35 buildings, average cost: $88,800. 4  2006: 8 buildings, average cost: $83,600. 5  2007: 15 buildings, average cost: $93,100. 6  2008: 20 buildings, average cost: $89,000.
Fortune has learned some early Uber shareholders did sell stock back to the company earlier this year, including at least one at around the aforementioned $135 per share price (which works out to a valuation just south of $4 billion).
For Amazon stock to reach $6,000 per share, the company's sales for the 10th year from now must be $938.9 billion, or $1,993.36 per share, using the 471 million shares outstanding at the end of 2015.